import java.util.Scanner;

public class Mainxxx {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        String str = sc.nextLine();
        char[] chArr = str.toCharArray();
        for (int i=0;i<chArr.length/2;i++){
            System.out.println(chArr[i]);
        }
    }
}
